tools/batchMod.pl

   1 #!/usr/bin/perl
   2
   3
   4 # Copyright 2000-2002 Katipo Communications
   5 #
   6 # This file is part of Koha.
   7 #
   8 # Koha is free software; you can redistribute it and/or modify it under the
   9 # terms of the GNU General Public License as published by the Free Software
  10 # Foundation; either version 2 of the License, or (at your option) any later
  11 # version.
  12 #
  13 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  14 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  15 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License along
  18 # with Koha; if not, write to the Free Software Foundation, Inc.,
  19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20
  21 use CGI;
  22 use strict;
  23 #use warnings; FIXME - Bug 2505
  24 use C4::Auth;
  25 use C4::Output;
  26 use C4::Biblio;
  27 use C4::Items;
  28 use C4::Context;
  29 use C4::Koha; # XXX subfield_is_koha_internal_p
  30 use C4::Branch; # XXX subfield_is_koha_internal_p
  31 use C4::BackgroundJob;
  32 use C4::ClassSource;
  33 use C4::Dates;
  34 use C4::Debug;
  35 use Switch;
  36 use MARC::File::XML;
  37
  38 my $input = new CGI;
  39 my $dbh = C4::Context->dbh;
  40 my $error        = $input->param('error');
  41 my @itemnumbers  = $input->param('itemnumber');
  42 my $op           = $input->param('op');
  43 my $del          = $input->param('del');
  44 my $completedJobID = $input->param('completedJobID');
  45 my $runinbackground = $input->param('runinbackground');
  46
  47
  48 my $template_name;
  49 my $template_flag;
  50 if (!defined $op) {
  51     $template_name = "tools/batchMod.tmpl";
  52     $template_flag = { tools => '*' };
  53 } else {
  54     $template_name = ($del) ? "tools/batchMod-del.tmpl" : "tools/batchMod-edit.tmpl";
  55     $template_flag = ($del) ? { tools => 'items_batchdel' }   : { tools => 'items_batchmod' };
  56 }
  57
  58
  59 my ($template, $loggedinuser, $cookie)
  60     = get_template_and_user({template_name => $template_name,
  61                  query => $input,
  62                  type => "intranet",
  63                  authnotrequired => 0,
  64                  flagsrequired => $template_flag,
  65                  });
  66
  67
  68 my $today_iso = C4::Dates->today('iso');
  69 $template->param(today_iso => $today_iso);
  70 $template->param(del       => $del);
  71
  72 my $itemrecord;
  73 my $nextop="";
  74 my @errors; # store errors found while checking data BEFORE saving item.
  75 my $items_display_hashref;
  76 my $frameworkcode="";
  77 my $tagslib = &GetMarcStructure(1,$frameworkcode);
  78
  79 my $deleted_items = 0;     # Numbers of deleted items
  80 my $not_deleted_items = 0; # Numbers of items that could not be deleted
  81 my @not_deleted;           # List of the itemnumbers that could not be deleted
  82
  83 my %cookies = parse CGI::Cookie($cookie);
  84 my $sessionID = $cookies{'CGISESSID'}->value;
  85
  86
  87 #--- ----------------------------------------------------------------------------
  88 if ($op eq "action") {
  89 #-------------------------------------------------------------------------------
  90     my @tags      = $input->param('tag');
  91     my @subfields = $input->param('subfield');
  92     my @values    = $input->param('field_value');
  93     # build indicator hash.
  94     my @ind_tag   = $input->param('ind_tag');
  95     my @indicator = $input->param('indicator');
  96
  97     # Is there something to modify ?
  98     # TODO : We shall use this var to warn the user in case no modification was done to the items
  99     my $something_to_modify = scalar(grep {!/^$/} @values);
 100
 101     # Once the job is done
 102     if ($completedJobID) {
 103         # If we have a reasonable amount of items, we display them
 104         if (scalar(@itemnumbers) <= 1000) {
 105             $items_display_hashref=BuildItemsData(@itemnumbers);
 106         } else {
 107             # Else, we only display the barcode
 108             my @simple_items_display = map {{ itemnumber => $_, barcode => (GetBarcodeFromItemnumber($_) or ""), biblionumber => (GetBiblionumberFromItemnumber($_) or "") }} @itemnumbers;
 109             $template->param("simple_items_display" => \@simple_items_display);
 110         }
 111
 112         # Setting the job as done
 113         my $job = C4::BackgroundJob->fetch($sessionID, $completedJobID);
 114
 115         # Calling the template
 116         add_saved_job_results_to_template($template, $completedJobID);
 117
 118     # While the job is getting done
 119     } else {
 120
 121         # Job size is the number of items we have to process
 122         my $job_size = scalar(@itemnumbers);
 123         my $job = undef;
 124         my $callback = sub {};
 125
 126         # If we asked for background processing
 127         if ($runinbackground) {
 128             $job = put_in_background($job_size);
 129             $callback = progress_callback($job, $dbh);
 130         }
 131
 132         # For each item
 133         my $i = 1;
 134         foreach my $itemnumber(@itemnumbers){
 135
 136                 $job->progress($i) if $runinbackground;
 137                 my $itemdata=GetItem($itemnumber);
 138                 if ($input->param("del")){
 139                         my $return = DelItemCheck(C4::Context->dbh, $itemdata->{'biblionumber'}, $itemdata->{'itemnumber'});
 140                         if ($return == 1) {
 141                             $deleted_items++;
 142                         } else {
 143                             $not_deleted_items++;
 144                             push @not_deleted, { biblionumber => $itemdata->{'biblionumber'}, itemnumber => $itemdata->{'itemnumber'}, barcode => $itemdata->{'barcode'}, title => $itemdata->{'title'}, $return => 1 };
 145                         }
 146                 } else {
 147                     if ($something_to_modify) {
 148                         my $xml = TransformHtmlToXml(\@tags,\@subfields,\@values,\@indicator,\@ind_tag, 'ITEM');
 149                         my $marcitem = MARC::Record::new_from_xml($xml, 'UTF-8');
 150                         my $localitem = TransformMarcToKoha( $dbh, $marcitem, "", 'items' );
 151                         my $localmarcitem=Item2Marc($itemdata);
 152                         UpdateMarcWith($marcitem,$localmarcitem);
 153                         eval{my ($oldbiblionumber,$oldbibnum,$oldbibitemnum) = ModItemFromMarc($localmarcitem,$itemdata->{biblionumber},$itemnumber)};
 154                     }
 155                 }
 156                 $i++;
 157         }
 158     }
 159 }
 160 #
 161 #-------------------------------------------------------------------------------
 162 # build screen with existing items. and "new" one
 163 #-------------------------------------------------------------------------------
 164
 165 if ($op eq "show"){
 166         my $filefh = $input->upload('uploadfile');
 167         my $filecontent = $input->param('filecontent');
 168         my @notfoundbarcodes;
 169
 170     my @contentlist;
 171     if ($filefh){
 172         while (my $content=<$filefh>){
 173             chomp $content;
 174             push @contentlist, $content if $content;
 175         }
 176
 177         switch ($filecontent) {
 178             case "barcode_file" {
 179                 foreach my $barcode (@contentlist) {
 180
 181                     my $itemnumber = GetItemnumberFromBarcode($barcode);
 182                     if ($itemnumber) {
 183                         push @itemnumbers,$itemnumber;
 184                     } else {
 185                         push @notfoundbarcodes, $barcode;
 186                     }
 187                 }
 188
 189             }
 190
 191             case "itemid_file" {
 192                 @itemnumbers = @contentlist;
 193             }
 194         }
 195     } else {
 196        if ( my $list=$input->param('barcodelist')){
 197         push my @barcodelist, split(/\s\n/, $list);
 198
 199         foreach my $barcode (@barcodelist) {
 200
 201             my $itemnumber = GetItemnumberFromBarcode($barcode);
 202             if ($itemnumber) {
 203                 push @itemnumbers,$itemnumber;
 204             } else {
 205                 push @notfoundbarcodes, $barcode;
 206             }
 207         }
 208
 209     }
 210 }
 211     # Only display the items if there are no more than 1000
 212     if (scalar(@itemnumbers) <= 1000) {
 213         $items_display_hashref=BuildItemsData(@itemnumbers);
 214     } else {
 215         $template->param("too_many_items" => scalar(@itemnumbers));
 216         # Even if we do not display the items, we need the itemnumbers
 217         my @itemnumbers_hashref = map {{itemnumber => $_}} @itemnumbers;
 218         $template->param("itemnumbers_hashref" => \@itemnumbers_hashref);
 219     }
 220 # now, build the item form for entering a new item
 221 my @loop_data =();
 222 my $i=0;
 223 my $authorised_values_sth = $dbh->prepare("SELECT authorised_value,lib FROM authorised_values WHERE category=? ORDER BY lib");
 224
 225 my $branches = GetBranchesLoop();  # build once ahead of time, instead of multiple times later.
 226
 227 # Adding a default choice, in case the user does not want to modify the branch
 228 my $nochange_branch = { branchname => '', value => '', selected => 1 };
 229 unshift (@$branches, $nochange_branch);
 230
 231 my $pref_itemcallnumber = C4::Context->preference('itemcallnumber');
 232
 233
 234 foreach my $tag (sort keys %{$tagslib}) {
 235     # loop through each subfield
 236     foreach my $subfield (sort keys %{$tagslib->{$tag}}) {
 237         next if subfield_is_koha_internal_p($subfield);
 238         next if ($tagslib->{$tag}->{$subfield}->{'tab'} ne "10");
 239         # barcode and stocknumber are not meant to be batch-modified
 240         next if $tagslib->{$tag}->{$subfield}->{'kohafield'} eq 'items.barcode';
 241         next if $tagslib->{$tag}->{$subfield}->{'kohafield'} eq 'items.stocknumber';
 242         my %subfield_data;
 243
 244         my $index_subfield = int(rand(1000000));
 245         if ($subfield eq '@'){
 246             $subfield_data{id} = "tag_".$tag."_subfield_00_".$index_subfield;
 247         } else {
 248             $subfield_data{id} = "tag_".$tag."_subfield_".$subfield."_".$index_subfield;
 249         }
 250         $subfield_data{tag}        = $tag;
 251         $subfield_data{subfield}   = $subfield;
 252         $subfield_data{random}     = int(rand(1000000));    # why do we need 2 different randoms?
 253     #   $subfield_data{marc_lib}   = $tagslib->{$tag}->{$subfield}->{lib};
 254         $subfield_data{marc_lib}   ="<span id=\"error$i\" title=\"".$tagslib->{$tag}->{$subfield}->{lib}."\">".$tagslib->{$tag}->{$subfield}->{lib}."</span>";
 255         $subfield_data{mandatory}  = $tagslib->{$tag}->{$subfield}->{mandatory};
 256         $subfield_data{repeatable} = $tagslib->{$tag}->{$subfield}->{repeatable};
 257         my ($x,$value);
 258         $value =~ s/"/&quot;/g;
 259         unless ($value) {
 260             $value = $tagslib->{$tag}->{$subfield}->{defaultvalue};
 261             # get today date & replace YYYY, MM, DD if provided in the default value
 262             my ( $year, $month, $day ) = split ',', $today_iso;     # FIXME: iso dates don't have commas!
 263             $value =~ s/YYYY/$year/g;
 264             $value =~ s/MM/$month/g;
 265             $value =~ s/DD/$day/g;
 266         }
 267         $subfield_data{visibility} = "display:none;" if (($tagslib->{$tag}->{$subfield}->{hidden} > 4) || ($tagslib->{$tag}->{$subfield}->{hidden} < -4));
 268         # testing branch value if IndependantBranches.
 269
 270         my $attributes_no_value = qq(tabindex="1" id="$subfield_data{id}" name="field_value" class="input_marceditor" size="67" maxlength="255" );
 271         my $attributes          = qq($attributes_no_value value="$value" );
 272
 273         if ( $tagslib->{$tag}->{$subfield}->{authorised_value} ) {
 274         my @authorised_values;
 275         my %authorised_lib;
 276         # builds list, depending on authorised value...
 277
 278         if ( $tagslib->{$tag}->{$subfield}->{authorised_value} eq "branches" ) {
 279             foreach my $thisbranch (@$branches) {
 280                 push @authorised_values, $thisbranch->{value};
 281                 $authorised_lib{$thisbranch->{value}} = $thisbranch->{branchname};
 282             }
 283         $value = "";
 284         }
 285         elsif ( $tagslib->{$tag}->{$subfield}->{authorised_value} eq "itemtypes" ) {
 286             push @authorised_values, "";
 287             my $sth = $dbh->prepare("select itemtype,description from itemtypes order by description");
 288             $sth->execute;
 289             while ( my ( $itemtype, $description ) = $sth->fetchrow_array ) {
 290                 push @authorised_values, $itemtype;
 291                 $authorised_lib{$itemtype} = $description;
 292             }
 293         $value = "";
 294
 295           #---- class_sources
 296       }
 297       elsif ( $tagslib->{$tag}->{$subfield}->{authorised_value} eq "cn_source" ) {
 298           push @authorised_values, "" unless ( $tagslib->{$tag}->{$subfield}->{mandatory} );
 299
 300           my $class_sources = GetClassSources();
 301           my $default_source = C4::Context->preference("DefaultClassificationSource");
 302
 303           foreach my $class_source (sort keys %$class_sources) {
 304               next unless $class_sources->{$class_source}->{'used'} or
 305                           ($value and $class_source eq $value)      or
 306                           ($class_source eq $default_source);
 307               push @authorised_values, $class_source;
 308               $authorised_lib{$class_source} = $class_sources->{$class_source}->{'description'};
 309           }
 310                   $value = '';
 311
 312           #---- "true" authorised value
 313       }
 314       else {
 315           push @authorised_values, "" unless ( $tagslib->{$tag}->{$subfield}->{mandatory} );
 316           $authorised_values_sth->execute( $tagslib->{$tag}->{$subfield}->{authorised_value} );
 317           while ( my ( $value, $lib ) = $authorised_values_sth->fetchrow_array ) {
 318               push @authorised_values, $value;
 319               $authorised_lib{$value} = $lib;
 320           }
 321       }
 322       $subfield_data{marc_value} =CGI::scrolling_list(      # FIXME: factor out scrolling_list
 323           -name     => "field_value",
 324           -values   => \@authorised_values,
 325           -default  => $value,
 326           -labels   => \%authorised_lib,
 327           -override => 1,
 328           -size     => 1,
 329           -multiple => 0,
 330           -tabindex => 1,
 331           -id       => "tag_".$tag."_subfield_".$subfield."_".$index_subfield,
 332           -class    => "input_marceditor",
 333       );
 334     # it's a thesaurus / authority field
 335     }
 336     elsif ( $tagslib->{$tag}->{$subfield}->{authtypecode} ) {
 337         $subfield_data{marc_value} = "<input type=\"text\" $attributes />
 338             <a href=\"#\" class=\"buttonDot\"
 339                 onclick=\"Dopop('/cgi-bin/koha/authorities/auth_finder.pl?authtypecode=".$tagslib->{$tag}->{$subfield}->{authtypecode}."&index=$subfield_data{id}','$subfield_data{id}'); return false;\" title=\"Tag Editor\">...</a>
 340     ";
 341     # it's a plugin field
 342     }
 343     elsif ( $tagslib->{$tag}->{$subfield}->{value_builder} ) {
 344         # opening plugin
 345         my $plugin = C4::Context->intranetdir . "/cataloguing/value_builder/" . $tagslib->{$tag}->{$subfield}->{'value_builder'};
 346         if (do $plugin) {
 347                         my $temp;
 348             my $extended_param = plugin_parameters( $dbh, $temp, $tagslib, $subfield_data{id}, \@loop_data );
 349             my ( $function_name, $javascript ) = plugin_javascript( $dbh, $temp, $tagslib, $subfield_data{id}, \@loop_data );
 350             $subfield_data{marc_value} = qq[<input $attributes
 351                 onfocus="Focus$function_name($subfield_data{random}, '$subfield_data{id}');"
 352                  onblur=" Blur$function_name($subfield_data{random}, '$subfield_data{id}');" />
 353                 <a href="#" class="buttonDot" onclick="Clic$function_name('$subfield_data{id}'); return false;" title="Tag Editor">...</a>
 354                 $javascript];
 355         } else {
 356             warn "Plugin Failed: $plugin";
 357             $subfield_data{marc_value} = "<input $attributes />"; # supply default input form
 358         }
 359     }
 360     elsif ( $tag eq '' ) {       # it's an hidden field
 361         $subfield_data{marc_value} = qq(<input type="hidden" $attributes />);
 362     }
 363     elsif ( $tagslib->{$tag}->{$subfield}->{'hidden'} ) {   # FIXME: shouldn't input type be "hidden" ?
 364         $subfield_data{marc_value} = qq(<input type="text" $attributes />);
 365     }
 366     elsif ( length($value) > 100
 367             or (C4::Context->preference("marcflavour") eq "UNIMARC" and
 368                   300 <= $tag && $tag < 400 && $subfield eq 'a' )
 369             or (C4::Context->preference("marcflavour") eq "MARC21"  and
 370                   500 <= $tag && $tag < 600                     )
 371           ) {
 372         # oversize field (textarea)
 373         $subfield_data{marc_value} = "<textarea $attributes_no_value>$value</textarea>\n";
 374     } else {
 375         # it's a standard field
 376          $subfield_data{marc_value} = "<input $attributes />";
 377     }
 378 #   $subfield_data{marc_value}="<input type=\"text\" name=\"field_value\">";
 379     push (@loop_data, \%subfield_data);
 380     $i++
 381   }
 382 } # -- End foreach tag
 383
 384
 385     # what's the next op ? it's what we are not in : an add if we're editing, otherwise, and edit.
 386     $template->param(item => \@loop_data);
 387     if (@notfoundbarcodes) {
 388         my @notfoundbarcodesloop = map{{barcode=>$_}}@notfoundbarcodes;
 389         $template->param(notfoundbarcodes => \@notfoundbarcodesloop);
 390     }
 391     $nextop="action"
 392 } # -- End action="show"
 393
 394 $template->param(%$items_display_hashref) if $items_display_hashref;
 395 $template->param(
 396     op      => $nextop,
 397     $op => 1,
 398 );
 399
 400 if ($op eq "action") {
 401
 402     #my @not_deleted_loop = map{{itemnumber=>$_}}@not_deleted;
 403
 404     $template->param(
 405         not_deleted_items => $not_deleted_items,
 406         deleted_items => $deleted_items,
 407         not_deleted_loop => \@not_deleted
 408     );
 409 }
 410
 411 foreach my $error (@errors) {
 412     $template->param($error => 1);
 413 }
 414 output_html_with_http_headers $input, $cookie, $template->output;
 415 exit;
 416
 417
 418 # ---------------- Functions
 419
 420 sub BuildItemsData{
 421         my @itemnumbers=@_;
 422                 # now, build existiing item list
 423                 my %witness; #---- stores the list of subfields used at least once, with the "meaning" of the code
 424                 my @big_array;
 425                 #---- finds where items.itemnumber is stored
 426                 my (  $itemtagfield,   $itemtagsubfield) = &GetMarcFromKohaField("items.itemnumber", "");
 427                 my ($branchtagfield, $branchtagsubfield) = &GetMarcFromKohaField("items.homebranch", "");
 428                 foreach my $itemnumber (@itemnumbers){
 429                         my $itemdata=GetItem($itemnumber);
 430                         my $itemmarc=Item2Marc($itemdata);
 431                         my %this_row;
 432                         foreach my $field (grep {$_->tag() eq $itemtagfield} $itemmarc->fields()) {
 433                                 # loop through each subfield
 434                                 if (my $itembranchcode=$field->subfield($branchtagsubfield) && C4::Context->preference("IndependantBranches")) {
 435                                                 #verifying rights
 436                                                 my $userenv = C4::Context->userenv();
 437                                                 unless (($userenv->{'flags'} == 1) or (($userenv->{'branch'} eq $itembranchcode))){
 438                                                                 $this_row{'nomod'}=1;
 439                                                 }
 440                                 }
 441                                 my $tag=$field->tag();
 442                                 foreach my $subfield ($field->subfields) {
 443                                         my ($subfcode,$subfvalue)=@$subfield;
 444                                         next if ($tagslib->{$tag}->{$subfcode}->{tab} ne 10
 445                                                         && $tag        ne $itemtagfield
 446                                                         && $subfcode   ne $itemtagsubfield);
 447
 448                                         $witness{$subfcode} = $tagslib->{$tag}->{$subfcode}->{lib} if ($tagslib->{$tag}->{$subfcode}->{tab}  eq 10);
 449                                         if ($tagslib->{$tag}->{$subfcode}->{tab}  eq 10) {
 450                                                 $this_row{$subfcode}=GetAuthorisedValueDesc( $tag,
 451                                                                         $subfcode, $subfvalue, '', $tagslib)
 452                                                                         || $subfvalue;
 453                                         }
 454
 455                                         $this_row{itemnumber} = $subfvalue if ($tag eq $itemtagfield && $subfcode eq $itemtagsubfield);
 456                                 }
 457                         }
 458
 459             # grab title, author, and ISBN to identify bib that the item
 460             # belongs to in the display
 461                         my $biblio=GetBiblioData($$itemdata{biblionumber});
 462             $this_row{bibinfo} = join("\n", @$biblio{qw(title author ISBN)});
 463
 464                         if (%this_row) {
 465                                 push(@big_array, \%this_row);
 466                         }
 467                 }
 468                 @big_array = sort {$a->{0} cmp $b->{0}} @big_array;
 469
 470                 # now, construct template !
 471                 # First, the existing items for display
 472                 my @item_value_loop;
 473                 my @witnesscodessorted=sort keys %witness;
 474                 for my $row ( @big_array ) {
 475                         my %row_data;
 476                         my @item_fields = map +{ field => $_ || '' }, @$row{ @witnesscodessorted };
 477                         $row_data{item_value} = [ @item_fields ];
 478                         $row_data{itemnumber} = $row->{itemnumber};
 479                         #reporting this_row values
 480                         $row_data{'nomod'} = $row->{'nomod'};
 481             $row_data{bibinfo} = $row->{bibinfo};
 482                         push(@item_value_loop,\%row_data);
 483                 }
 484                 my @header_loop=map { { header_value=> $witness{$_}} } @witnesscodessorted;
 485
 486         return { item_loop        => \@item_value_loop, item_header_loop => \@header_loop };
 487 }
 488
 489 #BE WARN : it is not the general case
 490 # This function can be OK in the item marc record special case
 491 # Where subfield is not repeated
 492 # And where we are sure that field should correspond
 493 # And $tag>10
 494 sub UpdateMarcWith {
 495   my ($marcfrom,$marcto)=@_;
 496   #warn "FROM :",$marcfrom->as_formatted;
 497         my (  $itemtag,   $itemtagsubfield) = &GetMarcFromKohaField("items.itemnumber", "");
 498         my $fieldfrom=$marcfrom->field($itemtag);
 499         my @fields_to=$marcto->field($itemtag);
 500     foreach my $subfield ($fieldfrom->subfields()){
 501                 foreach my $field_to_update (@fields_to){
 502                                 $field_to_update->update($$subfield[0]=>$$subfield[1]) if ($$subfield[1]);
 503                 }
 504     }
 505   #warn "TO edited:",$marcto->as_formatted;
 506 }
 507
 508 sub find_value {
 509     my ($tagfield,$insubfield,$record) = @_;
 510     my $result;
 511     my $indicator;
 512     foreach my $field ($record->field($tagfield)) {
 513         my @subfields = $field->subfields();
 514         foreach my $subfield (@subfields) {
 515             if (@$subfield[0] eq $insubfield) {
 516                 $result .= @$subfield[1];
 517                 $indicator = $field->indicator(1).$field->indicator(2);
 518             }
 519         }
 520     }
 521     return($indicator,$result);
 522 }
 523
 524 # ----------------------------
 525 # Background functions
 526
 527
 528 sub add_results_to_template {
 529     my $template = shift;
 530     my $results = shift;
 531     $template->param(map { $_ => $results->{$_} } keys %{ $results });
 532 }
 533
 534 sub add_saved_job_results_to_template {
 535     my $template = shift;
 536     my $completedJobID = shift;
 537     my $job = C4::BackgroundJob->fetch($sessionID, $completedJobID);
 538     my $results = $job->results();
 539     add_results_to_template($template, $results);
 540 }
 541
 542 sub put_in_background {
 543     my $job_size = shift;
 544
 545     my $job = C4::BackgroundJob->new($sessionID, "test", $ENV{'SCRIPT_NAME'}, $job_size);
 546     my $jobID = $job->id();
 547
 548     # fork off
 549     if (my $pid = fork) {
 550         # parent
 551         # return job ID as JSON
 552
 553         # prevent parent exiting from
 554         # destroying the kid's database handle
 555         # FIXME: according to DBI doc, this may not work for Oracle
 556         $dbh->{InactiveDestroy}  = 1;
 557
 558         my $reply = CGI->new("");
 559         print $reply->header(-type => 'text/html');
 560         print "{ jobID: '$jobID' }";
 561         exit 0;
 562     } elsif (defined $pid) {
 563         # child
 564         # close STDOUT to signal to Apache that
 565         # we're now running in the background
 566         close STDOUT;
 567         close STDERR;
 568     } else {
 569         # fork failed, so exit immediately
 570         warn "fork failed while attempting to run $ENV{'SCRIPT_NAME'} as a background job";
 571         exit 0;
 572     }
 573     return $job;
 574 }
 575
 576 sub progress_callback {
 577     my $job = shift;
 578     my $dbh = shift;
 579     return sub {
 580         my $progress = shift;
 581         $job->progress($progress);
 582     }
 583 }
 584
 585